Systems, devices, methods, and components for illuminating shower stalls and closets

Millions of homes across the world have shower stalls with poor illumination, not only creating additional risk of falls and other accidents and making cleaning of the shower more difficult, but also reducing enjoyment of the showering experience. Accordingly, the present inventor devised, among other things, an illuminated shower curtain rod assembly. One exemplary rod assembly, which is adjustable via screwing in or out one or both of its end caps, includes a elongated tension rod having one or more electric light elements distributed along the length. In some variations, the rod is extruded from aluminum or plastic and includes an extruded strip light support element that supports an LED strip light and enhances rigidity of the curtain rod. Also some embodiments integrate a light diffusion panel into the rod structure for enhanced illumination and aesthetic appeal.